To provide a travel controller for a work vehicle providing proper linear traveling at a vehicle speed command value commanded by a vehicle speed command means in a linear traveling state, and proper turning in a turning radius commanded by a turning command means in a turning state.
In the linear traveling state, control is carried out so that a shift position of an operated body 29 of a continuously variable transmission of a reference side is in target shift position, and an output rotational speed of a continuously variable transmission of a following side is a target rotational speed. In the turning state, control is carried out so that the shift position of the operated body 29 of the continuously variable transmission of the reference side is in a target shift position, and an output rotational speed of a continuously variable transmission in an opposite side is a target rotational speed so that a speed ratio corresponding to the turning radius is provided. The shift position of the operated body 29 of the continuously variable transmission of the reference side is operated so that at least accelerating is avoided when changing from linear traveling to turning.
UEDA YOSHIHIRO
HAYASHI SHIGEKI
KATO YUJI
OKADA MIKIO
IKEDA FUTOSHI
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